Can we pass model as a parameter in RedirectToAction

Question

I want to know  there is any technique so we can pass Model as a parameter in RedirectToAction  For Example   public class Student      public int Id get set       public string Name get set       Controller  public class StudentController   Controller       public ActionResult FillStudent                 return View               HttpPost      public ActionResult FillStudent Student student1                return RedirectToAction  GetStudent   Student  new student student1              public ActionResult GetStudent Student student                return View              My Question - Can I pass student model in RedirectToAction

User · Answer

Yes you can pass the model that you have shown using

return RedirectToAction("GetStudent", "Student", student1 );

assuming student1 is an instance of Student

which will generate the following url (assuming your using the default routes and the value of student1 are ID=4 and Name="Amit")

.../Student/GetStudent/4?Name=Amit

Internally the RedirectToAction() method builds a RouteValueDictionary by using the .ToString() value of each property in the model. However, binding will only work if all the properties in the model are simple properties and it fails if any properties are complex objects or collections because the method does not use recursion. If for example, Student contained a property List<string> Subjects, then that property would result in a query string value of

....&Subjects=System.Collections.Generic.List'1[System.String]

and binding would fail and that property would be null

User · Answer

Using TempData     Represents a set of data that persists only from one request to the   next    HttpPost  public ActionResult FillStudent Student student1        TempData  student    new Student        return RedirectToAction  GetStudent   Student        HttpGet  public ActionResult GetStudent Student passedStd        Student std  Student TempData  student        return View        Alternative way Pass the data using Query string  return RedirectToAction  GetStudent   Student   new  Name  John   Class  clsz       This will generate a GET Request like Student GetStudent Name John  amp  Class clsz     Ensure the method you want to redirect to is decorated with  HttpGet  as   the above RedirectToAction will issue GET Request with http status   code 302 Found  common way of performing url redirect

User · Answer

NonAction  private ActionResult CRUD someModel entity            try                         you business logic here      return View entity                                                     catch  Exception exp                          ModelState AddModelError     exp InnerException Message                Response StatusCode   350               return someerrohandilingactionresult entity  actionType                         Retrun appropriate message or redirect to proper action       return RedirectToAction  Index

User · Answer

Just call the action no need for redirect to action or the new keyword for model     HttpPost      public ActionResult FillStudent Student student1                return GetStudent student1     this will also work           public ActionResult GetStudent Student student                return View student

User · Answer

i did find something like this  helps get rid of hardcoded tempdata tags  public class AccountController   Controller        HttpGet      public ActionResult Index IndexPresentationModel model                return View model               HttpPost      public ActionResult Save SaveUpdateModel model                   save the information          var presentationModel   new IndexPresentationModel             presentationModel Message   model Message           return this RedirectToAction c   gt  c Index presentationModel

User · Answer

HttpPost      public async Task lt ActionResult gt  Capture string imageData                                      if  imageData Length  gt  0                        var imageBytes   Convert FromBase64String imageData               using  var stream   new MemoryStream imageBytes                                 var result    JsonResult await IdentifyFace stream                   var serializer   new JavaScriptSerializer                    var faceRecon   serializer Deserialize lt FaceIdentity gt  serializer Serialize result Data                     if  faceRecon Success  return RedirectToAction  Index    Auth   new   param   serializer Serialize result Data                                        return Json new   success   false  responseText    Der opstod en fejl - Intet billede  manglede data      JsonRequestBehavior AllowGet               GET  Auth      HttpGet      public ActionResult Index string param                var serializer   new JavaScriptSerializer            var faceRecon   serializer Deserialize lt FaceIdentity gt  param             return View faceRecon

[asp.net-mvc] Can we pass model as a parameter in RedirectToAction?

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